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drm/exynos/dpi: use of_graph_get_endpoint_by_regs helper 

This allows to remove the local of_graph_get_port_by_reg(),
of_graph_get_endpoint_by_reg(), of_get_child_by_name_reg(),
and of_graph_get_remote_port_parent() functions.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Philipp Zabel 2016-05-03 15:47:24 +02:00 committed by Inki Dae
parent 562d54567f
commit fb38b1f608
1 changed files with 2 additions and 67 deletions
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69
drivers/gpu/drm/exynos/exynos_drm_dpi.c
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@ -15,6 +15,7 @@
#include <drm/drm_panel.h>
#include <drm/drm_atomic_helper.h>
#include <linux/of_graph.h>
#include <linux/regulator/consumer.h>
#include <video/of_videomode.h>
@ -164,67 +165,6 @@ static const struct drm_encoder_funcs exynos_dpi_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
/* of_* functions will be removed after merge of of_graph patches */
static struct device_node *
of_get_child_by_name_reg(struct device_node *parent, const char *name, u32 reg)
{
struct device_node *np;
for_each_child_of_node(parent, np) {
u32 r;
if (!np->name || of_node_cmp(np->name, name))
continue;
if (of_property_read_u32(np, "reg", &r) < 0)
r = 0;
if (reg == r)
break;
}
return np;
}
static struct device_node *of_graph_get_port_by_reg(struct device_node *parent,
u32 reg)
{
struct device_node *ports, *port;
ports = of_get_child_by_name(parent, "ports");
if (ports)
parent = ports;
port = of_get_child_by_name_reg(parent, "port", reg);
of_node_put(ports);
return port;
}
static struct device_node *
of_graph_get_endpoint_by_reg(struct device_node *port, u32 reg)
{
return of_get_child_by_name_reg(port, "endpoint", reg);
}
static struct device_node *
of_graph_get_remote_port_parent(const struct device_node *node)
{
struct device_node *np;
unsigned int depth;
np = of_parse_phandle(node, "remote-endpoint", 0);
/* Walk 3 levels up only if there is 'ports' node. */
for (depth = 3; depth && np; depth--) {
np = of_get_next_parent(np);
if (depth == 2 && of_node_cmp(np->name, "ports"))
break;
}
return np;
}
enum {
FIMD_PORT_IN0,
FIMD_PORT_IN1,
@ -237,12 +177,7 @@ static struct device_node *exynos_dpi_of_find_panel_node(struct device *dev)
{
struct device_node *np, *ep;
np = of_graph_get_port_by_reg(dev->of_node, FIMD_PORT_RGB);
if (!np)
return NULL;
ep = of_graph_get_endpoint_by_reg(np, 0);
of_node_put(np);
ep = of_graph_get_endpoint_by_regs(dev->of_node, FIMD_PORT_RGB, 0);
if (!ep)
return NULL;